code: def test_init(self):
      answer = ExtractedTableAnswer(
          data="42",
          query="What is the answer?",
          document=Document(
              dataframe=DataFrame(
                  {"col1": [1, 2], "col2": [3, 4], "col3": [5, 42]}
              )
          ),
          context=DataFrame({"col3": [5, 42]}),
          score=1.0,
          document_cells=[ExtractedTableAnswer.Cell(1, 2)],
          context_cells=[ExtractedTableAnswer.Cell(1, 0)],
          meta={"meta_key": "meta_value"},
      )
      assert answer.data == "42"
      assert answer.query == "What is the answer?"
      assert answer.document == Document(
          dataframe=DataFrame(
              {"col1": [1, 2], "col2": [3, 4], "col3": [5, 42]}
          )
      )
      assert answer.context.equals(DataFrame({"col3": [5, 42]}))
      assert answer.score == 1.0
      assert answer.document_cells == [ExtractedTableAnswer.Cell(1, 2)]
      assert answer.context_cells == [ExtractedTableAnswer.Cell(1, 0)]
      assert answer.meta == {"meta_key": "meta_value"}
  
file_path: haystack/test/dataclasses/test_answer.py
imports: from pandas import DataFrame
  from haystack.dataclasses.answer import Answer, ExtractedAnswer, ExtractedTableAnswer, GeneratedAnswer
  from haystack.dataclasses.document import Document
label_desc: Use image node_id 1 for calling the TestExtractedTableAnswer obj's underlying member method code with example usage: obj.test_init() without return types